VetSRev
Database of veterinary systematic reviews
Database of veterinary systematic reviews
Scientia Agricola (2002) 59: 435–440
DOI: 10.1590/S0103-90162002000300004
The problem of combining information from independent studies permeates almost all fields of science. Because the number of scientific articles being published has increasingly grown in the past years, combining information has become a necessity. A meta-analysis was conducted to summarize published estimates of genetic correlation between birth and weaning weights of zebu beef cattle, through the collection of estimates of 39 reports, from 1968 to 2000 [place not given]. Data were analysed by fixed and random effect models. Components of variance were obtained by the restricted maximum likelihood technique. A strong lack of homogeneity among the studies was observed. As a consequence, fixed model estimates of combined results were inappropriate. Results suggest that random effect models produce better estimates. Subgroup comparisons, for decade publication, showed heterogeneity. Meta-analysis techniques were recommended for quantitative reviews of genetic parameters.
Giannotti, J. di G., Packer, I. U., & Mercadante, M. E. Z. (2002). [Meta-analysis for estimates of genetic correlation between birth and weaning weights of cattle]. Scientia Agricola, 59(3), 435–440. https://doi.org/10.1590/S0103-90162002000300004 [Indexed using CAB Thesaurus terms], animals, Artiodactyla, Chordata, eukaryotes, mammals, ungulates, vertebrates, Bos, Bovidae, cattle, meta-analysis, ruminants, Animal Genetics and Breeding [LL240], Mathematics and Statistics [ZZ100], birth weight, genetic correlation, liveweight, statistical analysis, statistical methods